that's our tax base. at a time when tax bases are diminishing income to citizens is diminishing, when you can show them how different it can be, that suddenly makes good business sense to them and they'll dedicate the resources to you. so, that's what's worked for me. (applause) >> anybody else up there? everybody okay with that answer? i think we're pretty grateful here in san francisco that we have a mayor that was actually the director of the department of public works. so, we know he's totally on top of it and involved. do you have another question? >> this isn't geared towards any particular speaker, but it is geared towards abatement. we have an annual volunteer event where graffiti is removed city-wide. in an effort to encourage youth to participate we are considering a flash mob where all volunteers will abate graffiti at the same time on the same day along major thoroughfares. is this a good idea or does it detract from the issue? thoughts? okay, yes. >> that's a great question. >> thank you. my